Sand or abrasive paper holder.



G. G. SADLBR.

SAND 0R ABRASIVE PAPER HOLDER.

APPLICATION FILED JUNE 10 1907.

905,464. Patented Dec. 1, 1908.

1/95 hwooeo atkoznut G. O. SADLER.

SAND 0R ABRASIVE PAPER HOLDER.

APPLIOATION FILED JUNE 10, 1907.

905.464. Patented Dec. 1,1908.

2 SHEETS-*SHEET 2.

UNITED STATES CHARLES C. SADLER, OF ALTOONA, PENNSYLVANIA.

semi OR ABBASIVE PAPER HOLDEBi.

Specification of Letters Patent.

Patented Dec. 1, 1908.

Application filed June 10, 1907. Serial No. 378,260.

To all whom it my concern:

Be it known that I, CHARLES C. SAoLsa, a citizen of the United States,residing at Altoona, in the county of Blair and State of Pennsylvania,have invented certain new and useful Improvements in Sand or AbrasivePaper Holders, of which the following is a specification, referencebeing had therein to the accompanying drawing.

This invention relates to improvements in sand or abrasive paperholders, the main object being to provide a new and novel holder,whereby sand aper is quickly removed when worn, an re laced by a sim leand eflicient means, whic clamps the san pa er in a'rigid and'tautposition upon the hol er, without the necessity of using glue or any butmechanical means.

To carry my invention into ractice, I employ a evice, which is ada tedto receive a portion of the holder, and ave the sheet of sand paperlaced therein, the holder being so arranged with relation to the device,as to have the smooth surface of the paper in contact therewith. Bymeans of a concentric means, clamping devices are so operated as to pushthe holder forward into closer contact with the device, while theportion of the holder is clamped tightly against the holder, stretchingthe sand paper and securing itupon the holder. The device is now removedfrom the holder, and the paper is ready for'use.

To more clearly illustrate my invention,

attention is invited to the accompanying drawings, in which 1 Figure 1is a rear plan view of the preferred form of my sand pa er holder. Fig.2 is a central section thereo before the sand paper has been tightenedin the holder. Fig. 3 is a similar view with the paper tightened. Figs.4 and 5 are detail views of the clamp. Fig. 6 is a detail sectionillustrating the angles between the disk and rim. Fig. 7 is a rear planview of a modified form of holder. Fig. 8 is a cross section thereofwith the paper in position before tightening, and Fig. 9'is a similarview with the paper taut.

Referring to the drawings :-The numeral 1 designates the holder or disk,which is secured to a lathe or other revolving medium by means of thecircular lu 0r boss 2. Secured to the rear face of t e disk near theperiphery thereof is a metal ring 3, which has connected thereto thesliding concentric ring 4, through the medium of the pins 5,

which are carried by the rin 4, and pass through the'curved slots 6, othe eccentric clamps 7, which are secured pivotall' to the stationaryring 3, by means of the lts or screws 8. In order to secure the sandpaper upon the outer face of the holder, the eccentric surfaces 9, ofthe clamps 7, are thrown into engagement with the underface of theprojecting rim 10, of the clamp' band or ring 11, and thus draw theclamping band, toward and over the curved periphery or sand paper andsecure the turned edges thereof between the clampin band and the edge ofthe holder. It wil be noticed by reference to Fig. 4 that the a le a ofthe edge 12 is about 65 degrees, wh e the angle 6 of the clamping rim11, of the band is degrees, thus providing a difference which allows theedges of the sand aper to be securely gripped at all points t oughoutthe holder.

In Figs. 7, 8 and 9, I have illustrated a modified form of holdingdevice, which embodies a centering and securing device with the holder.This device consists of'a holding disk or plate 19, which has slidinglymounted upon its rear face near its eri hery the concentric ring 20,which is el in its relative position to the disk 19, by means of thesecuring devices 21. Adapted to be used in conjunction with the disk 19to hold the sand paper upon said disk, is a clamping band 22, which hasthe paper grip ing inclined surface 23, which is adapte to surround theinclined peripheral edge 24: of the disk 19. In securing the sand paperto the face of the disk 19, the paper is inserted in the band roughsurface down, and so that its edges project against the surface 23thereof. The disk 19, is then inserted, the pins or studs 25, carried bythe ring 20 passing through the notches 26 of the band and seatingwithin the internal annular groove or channel 27 of the band. The ring20, is then turned, the pins or studs 25, being thrown into engagementwith the lower inclined or eccentric face of the curved plates 28, whichforce or move the disk 19 further within the band, so' that the crimpedor turned up edges of the sand paper is gripped tightly between thesurface 23 and edge 24, thus securely holding the sand paper in place.In order that the concentric rings 4 and-20, res ectively, ma be turnedto fasten or un asten the c amping bands of edge 12 of the holder, andthus stretch thethe respective holders, I provide the lugs c and (Z,respectively, which are adapted to be engaged by a spanner.

What I claim, is

l. A holder for sand or abrasive paper, comprising a disk adapted toreceive the paper, a band adapted to surround the disk and have the edgeof the paper between it and the edge of the disk, a sliding ring carriedby the disk, and wedging means 0perably connected with said ring-andadapted to be introduced between the band and disk to clamp the edge ofthe paper between the band and the edge of the disk.

2. A holder for sand or abrasive paper, comprising a disk adapted toreceive the paper, a band adapted to surround the disk and have the edgeof the paper between it and the edge of the disk, a ring mounted uponthe disk so as to slide slightly concentrically, and pivoted eccentricsoperated to be wedged between the band and disk as the ring is moved todraw the clamping portion of the band toward the edge of the disk. 4

3. A holder for sand or abrasive paper, comprising a disk adapted toreceive the sand paper, a band adapted to surround the disk and clampthe edge of the paper between the band and rim of the disk, a ringsliding concentrically upon the disk, and a series of wedges pivoted tothe disk and having handles connected to the ring, whereby as the ringis moved the wedging ends of the wedges are forced between the disk andband to cause the band to clamp the edge of the paper firmly upon thedisk.

In testimony whereof I affix my signature in presence of two witnesses.

CHARLES C. SADLER. Witnesses:

JAMES W. MOAULIFFE, ROBERT E. SMULLING.

